Have you always had a great idea for a new building in Playdom’s Social City? What about a terrain item or decoration? If you answered yes to either question, then Playdom’s new “Social City Building Design Contest” is for you!

The contest asks you to come up with a building, terrain, road or decoration idea for Social City and submit it on the game’s forums. Your prospective item can be a re-envisioning of a iconic monument, or an item of your own design – heck, you can even submit your own home as your submission if you so choose.

After the submission period ends on July 12, the team at Playdom will select their 20 favorite ideas and will let us, the players vote on which one we think is best. The winning design will not only be added to the Build Menu as a coin-availability item, but the winner will receive 100 City Bucks. In addition, the creators of the top 20 designs (that is, those ideas that we are allowed to vote on) will receive the winning design item on their accounts for free.

You’ve got a few days to come up with a clever idea, so get those creative juices flowing and head over to the game’s forums to enter. Good luck!